8 034, 036, 036 QS
Troubleshooting chart - see
"Standard Repairs, Trouble-
shooting" handbook.
Unscrew nuts (1) from chain
sprocket cover (2). Remove the
sprocket cover, bar and chain (3).
VA
138RA002
1
2
3
Disengage the chain brake by
pulling the hand guard toward the
front handle.
VA
143RA004
Remove the E-clip (1) and
washer (2). If a rim sprocket (3)
is fitted, pull it off.
VA
148RA061
3
21
036 QS
Disengage the additional brake
by pressing down the throttle
trigger and interlock lever.
Remove the clutch drum (1) and
needle cage (2).
VA
148RA062
1
2
034, 036
Pull off the chain sprocket (1) or
clutch drum (2).
– Take out the needle cage.
VA
138RA003
1
2
Inspect the clutch drum (1).
There should be no scores or
signs of excessive wear.
Important:
If there are signs of serious wear on
the inside diameter of the clutch
drum (1), check the remaining wall
VA
148RA101
80%
100%
1
!
thickness. If it is less than about
80% of the original thickness, fit a
new clutch drum.
Note:
Clean stub of crankshaft. Wash
needle cage, examine it for damage
and replace if necessary. Lubricate
needle cage with STIHL multi-
purpose grease - see 13.2.
Reassemble in the reverse
sequence - start by fitting the needle
cage on the crankshaft stub.
4 Clutch, Chain Drive,
Chain Brake and
Chain Tensioner
4.1 Clutch Drum and Chain Sprocket